Sure, we would like to have more people to help this project. It could be coding, translating, drawing icons, or writing our own user manual/wiki. Of course, you are welcome to submit your hatch patterns.

The easiest from my view is to send in pull requests from github. You may also submit a feature request with the files attached.

Basically, you draw the pattern as a new dxf file. If you are not sure, copy a dxf file in the folder in source code:

support/patterns/*.dxf

modify it and save it to the system folder: /usr/share/librecad/patterns/ , then, the pattern should be available to LibreCAD.

Please submit your dxf to the source code of LibreCAD to share with the LibreCAD community. Since all new LibreCAD code is covered GPLv2+ (GPL version 2 or at user’s choice any later version), please state that your contribution is licensed as GPLv2+.